package com.des1gn.serviceb.dao;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.des1gn.serviceb.entity.A;
import com.des1gn.serviceb.entity.B;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

import java.util.List;

/**
 * <p>
 *  Mapper 接口
 * </p>
 *
 * @author dx
 * @since 2021-06-17
 */
public interface BMapper extends BaseMapper<B> {

    @Select("select * from b")
    List<B> getFirst();


}
